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/*
* Copyright 2011 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "gl/SkNativeGLContext.h"
SkNativeGLContext::AutoContextRestore::AutoContextRestore() {
fOldAGLContext = aglGetCurrentContext();
}
SkNativeGLContext::AutoContextRestore::~AutoContextRestore() {
aglSetCurrentContext(fOldAGLContext);
}
///////////////////////////////////////////////////////////////////////////////
SkNativeGLContext::SkNativeGLContext()
: fContext(NULL) {
}
SkNativeGLContext::~SkNativeGLContext() {
this->destroyGLContext();
}
void SkNativeGLContext::destroyGLContext() {
if (fContext) {
aglDestroyContext(fContext);
}
}
const GrGLInterface* SkNativeGLContext::createGLContext() {
GLint major, minor;
AGLContext ctx;
aglGetVersion(&major, &minor);
//SkDebugf("---- agl version %d %d\n", major, minor);
const GLint pixelAttrs[] = {
AGL_RGBA,
AGL_ACCELERATED,
AGL_NONE
};
AGLPixelFormat format = aglChoosePixelFormat(NULL, 0, pixelAttrs);
if (NULL == format) {
SkDebugf("Format could not be found.\n");
this->destroyGLContext();
return NULL;
}
fContext = aglCreateContext(format, NULL);
if (NULL == fContext) {
SkDebugf("Context could not be created.\n");
this->destroyGLContext();
return NULL;
}
aglDestroyPixelFormat(format);
aglSetCurrentContext(fContext);
const GrGLInterface* interface = GrGLCreateNativeInterface();
if (NULL == interface) {
SkDebugf("Context could not create GL interface.\n");
this->destroyGLContext();
return NULL;
}
return interface;
}
void SkNativeGLContext::makeCurrent() const {
aglSetCurrentContext(fContext);
}
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